Cross-weaving loom.



Nd. 849,647. PATENTED APR. 9, 1907.

. A. WEIMAR.

GROSS WEAVING LOOM.

APPLICATION FILED we. a, 1905.

5 SHEETS-SHEET 1.

7H5 NORRIS PETERS rn, wAsHmnvcm r. c

No. 849,647. PATBNTED APRQQ, 190.7,

' A. WEIMAR. I

GROSS WEAVING 1100M.

Arrmou'mn FILED Alma. 1906.

6 SHEETS-BHEBT 2.

No. 849,647. PATENTED APR. 9, 1907. v A. WEIMAR. cxoss WEAVING LOOM. APPLICATION FILED AUG. 8, 1906.

III N wzz 113.8%,647. Y PATENTBD APR. 9, 1907. .A. WEIMAR.-

' GROSS WBAVING LOOM.

APPLICATION FILED AUG. 8, 1905.

5 SHEETS-SHBE'1' 4.

PATENTED APR. 9, 1907.

A WEIMAR.

GROSS W'BAVING LOOM.

APPLICATION FILED AUG.8, 1005.

5 SHEETS-SHEET 5.

THE NORRIS PETERS 00., WASNINOYGN, n, c.

UNITED STATES PATENT @FFIUE,

ANDREW WEIMAR, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ON E- HALF TO WILLIAM D. WEIMAR, OF PHILADELPHIA, PENNSYLVANIA.

CROS$-WEAVING LOOM.

Specification of Letters Patent.

Patented April 9, 1907.

A li ati fil d August 8, 1905. Serial No. 273,228.

To all whom, it may concern.

Be it known that I, ANDREW IVEIMAR, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented cer tain Improvements in Cross-\Veaving Looms, of which the following is a specification.

My invention relates especially to improvements in that class of cross-weaving looms which are employed in weaving narrow webs, the cross-weaving being adopted in connection with certain of the warp-threads of each web-such, for instance, as the warp-threads at the selvages of the web-although certain features of the invention are applicable to cross-weaving looms generally.

The objects of the invention are to expedite the weaving operation, to simplify and cheapen the construction of the loom, to alternate plain weaving and cross-weaving with the same set of warpthreads, and to provide for quick and accurate adjustment in respect to each other of the warp-threadcontrolling devices of the loom.

In the accompanying drawings, Figure 1 is a front view of one end of sufficient of a crossweaving loom to illustrate my present invention. Fig. 2 is a similar view of the other end of the loom. Fig. 3 is an enlarged front elevation of the end portion of the hcddles of the loom. Fig. 4 is a transverse section on the line a a, Fig. 3. Fig. 5 is a transverse section, on a larger scale, on the line b I), Fig. 3. Fig. 6 is a sectional plan view, also on an enh rged scale, on the line (Z (Z, Fig. 3. Fig. 7 is a view, partly in end elevation and partly in section, on the line ff, Fig. 2. Fig. 8 is a side elevation of part of a heddle, illustrating a special feature of construction forming part of my invention. Fig. 9 is a transverse section on the line 9 Fig. 8; and Figs. 10 to 13, inclusive, are views of cams employed when it is desired to alternate plain weaving and cross-weaving with the same set of warp-threads.

Referring first toFigs. 1 and 2, 1 represents part of the fixed frame of the loom, and 2 and 3 represent heddles, each composed of two sections, one extending from the central portion of the loom to the right-hand end of the same and the other extending from the central portion of the loom to the left-hand end of the same, each of these heddle-sections having at its inner end an angle-bar 4, which is connected by a rigid transverse link 5 to a corresponding angle-bar at the inner end of the other section of the heddle, the two heddlescctions being thereby united by an elevated central connection, which while it insures rigidity of the heddle and uniform and simultaneous movement of both ends of the same yet does not interfere with any of the machinery usually located at the central portion of a loom of this type.

Each heddle is suspended from the archbar or yoke constituting part of the "fixed 5 frame of the loom by means of cords, wires, or other equivalent suspension devices 6, which serve to limit the descent of the heddle, and consequently prevent breaking of the warp-threads in the event of the breaking 7 of either of the cords or wires 7, whereby each hcddle is connected to bell-crank levers S), which are hung upon suitable pivot-shafts carried by the upper frame of the loom and are by means of cords or wires 10 connected together and to a lever 11, each lever 11. having an antifriction-roller which is acted upon by a cam 12 or 13, mounted upon a shaft 14 at one end of the loom and rotated either continuously or intermittently by any suitable 30 system of gearing. Another cam-disk 1.5 on said shaft 1 1 acts upon an antifriction-roller on a lever 16, hung to the same pin as the levers 11. this lever 16 being connected by a cord or wire 17 to an arm orlever 1S, hung upon the 8 5 same pivot-shaft as the levers 9, the connection being carried across the loom by other wires 17 and arms or levers 18 until the final cord or wire 17 is connected by a hooked yoke 19 to one arm of a bell-crank lever 20, which 9 is pivoted to a bracket on the fixed frame of the loom and is connected by a rod 21 to another bell-crank lever 22, located in a lower plane and acted upon by a spring 22, which tends to move it in the direction of the arrow, Fig. 2. The rod 21 at its upper and lower ends engages and is secured to a tubular stud 23, which is pivoted to a slide 24, mounted upon the bell-crank lever 20 or 22, so as to be adjustable. from and toward the fulcrum of the same. The lever 22 has tl 1100 arms, the upwardlyqurojccting arm having a projecting stem with antifriction-roller 23, which engages a slot 26 in the vertical arm of an angle-bar 27, which is secured to the outer end of the heddle 2, the dowinmrdly-projeeting arm of the lever 22 having a similar roller 28 I bears upon the outer face of the heddle or which engages a slot 29 in the downwardlyprojecting portion of an angle-bar 30, which is secured to the heddle 3. By the action of the cams 12 and 13, therefore, the heddles 2 and 3 are alternately raised and lowered, and by the action of the cam 15 the heddles are shifted laterally to a slight extent.

Each section of the front heddle 2 has mounted in its end bars and in certain inter vening vertical bars upper and lower bars 31, upon which are loosely strung at appropriate intervals pairs or groups of vertical bars 32, between which pass those warp-threads of each set which are employed in weaving the plain fabric of each band, these warp-threads being controlled by ordinary heddles independent of the heddles 2 and 3 and having no cross movement. The heddle 2 also carries near the top a pair of bars 33, and each of these bars is provided with a series of depending needles 34, one of said needles being located at the right-hand side of each pair or group of reed-bars 32 and the other at the left-hand side of the same, and in like manner the heddle 3 is provided at its lower portion with a pair of similar longitudinal bars 35 with upwardly-projecting needles 36, lo-

cated likewise at the right and left, respec tivelv, of each pair or group of bars 32.

The needles 34 and 36 have at their free ends eyes for the reception of the warpthreads which are to be crossed, these warpthreads being in the present instance, the selvaging threads of each group or set whereby a narrow web is woven, although the crossing warp-threads may be located in any desired portion of the web, the construction shown being simply one example of such location.

Outside of each pair of needles 34 36 is a guard-bar 45, mounted on the bars 31 whereby each group or set of cross-weaving warpthreads is confined between a pair of bars 32 and 45, thus preventing interference of said warp-threads with those adjacent thereto.

Each needle 34 or 36 is secured to its respective bar 33 or 35 by being looped or hooked around a bolt, which passes through said bar and has at one end a head 37 and at the other end a nut 38, as shown in Fig. 5, the bent or hooked end of theneedle being confined between the bar 33 or 35 and a washer under the head 37 of the bolt and being additionally secured to the bar, so as to prevent it from swinging or twisting thereon, by having a bent end portion 39, which en ters an opening in the bar, and thus serves to lock the head of the needle rigidly thereto.

Each of the bars 33 or 35 has at each end an opening for the reception of the hooked inner end of a bolt 40, which passes through an opening in the end bar of the heddle and is threaded for the reception of a nut 41, which upon a washer interposed between the same and the nut. These bolts 40 thus serve not only to maintain the bars 33 and 35 under tension, but also provide for a certain amount of lateral adjustment of said bars independently of each other, and thus provide for moving the needles 34 or 36 of each pair from and toward each other, so as to adapt them for use in connection with wider or narrower bands or change their position in respect to the width of the band, as may be desired, the loose mounting of the bars 32 and 45 on the longitudinal bars 31 also permitting of any desired lateral adjustment of said bars in respect to one another.

In Figs. 8 and 9 I have illustrated a construction in which the needles of each pair are adjustable in respect to each other independently of the needles of any other pair. In this construction a fixed longitudinal bar 33 is employed, and each needle has at the tops a split head 42, which embraces both the bar 33 and the bar 31 beneath the same and has a transverse clamp-screw 43. On loosening this screw the hold of the head 42 upon the bars 31 and 33 is slackened, and said head can be moved laterally to any desired position on the bars required by the desired adjustment of the needle, the head being firmly clamped to the bars by again tightening the screw 43 after such adjustment has been effected. The lower crossing warpthread of each set is carried by an upper needle 34, and the upper crossing warpthread of each set is carried by a lower needle 36, and in cross-Weaving the heddles carrying these needles are operated by What may be termed a half-shed-andreturn movementthat is to say, the heddles are moved to an extent slightly in excess of onehalf the opening of the shed, so that the free ends of the needles 34 will be slightly above the free ends of the needles 36, and at this time the lateral movement of the heddleframes is effected prior to the drop of the frame 2 and the lift of the frame 3 to their former positions. This half-shed-and-return movement of the heddles is effected during one complete beat or forward and backward movement of the lay and can of course be made in less time than. an up-and down movement equal in extent to the full opening of the shed, as in. previous looms of this class with which I am familiar. Hence the operation of the loom is correspondingly quickened.

If it is desired to combine cross-Weaving and plain weaving with the same set of warpthreads, these half-shed-and-returh movements of the heddles 2 and 3 alternate with full-shed movements without return and without crossing movement of either heddle, and in Figs. 10 to 13 I have shown cams constructed in accordance with my invention for effecting this compound movement of the heddles, 12 representing the cam which im- 5 parts movement to one heddle-frame and 13 l the cam which imparts movement to the 3 other heddle-frame, the cams 12, Fig. 10, l and 13, Fig. 11, having three throws w, w, and y, (indicated by the concentric dotted lines,) the cam 12, Fig. 12, having the two throws :r and y, and the cam 13 Fig. 13, hav ing the two throws w and 9;. Each of these cams is designed to have one complete rota tion for eight rotations of the crank-shalt corresponding to eight full beats of the lay, and it will be observed that the movements a, b, c, and (i will each effect a partial drop and a following rise or a partial rise and a following drop of the heddle acted upon, while the movements e,f, g, and 7t will effect a full drop or a full rise only, the movements (1, Z), c, and d corresponding with the cross-weave and the movements e,f, g, and h corresponding with the plain weave.

In the cam shown in Figs. 10 and 1.1 there is a movement of the heddles for each iull beat of the lay; but in the cams shownin Figs. 12 and 13 there is no shedding of the cross warp-threads between the cross-weaves, the cams being so constructed as to provide for a dwell between the successive cross-weaving movements.

It will be understood that in a loom intended to combine cross-weaving and plain weaving with the same set of warp-threads in the manner described the cam 15 is so formed as to impart no lateral movement to the heddles 2 and 3 during the time that plain weaving is being performed.

The character of the cams will of course be determined by the character of the weave to be produced, and instead of using cams I may use pattern-chains with like conformation of the members for elleeting movement of the heddles which control the cross-weaving warp-threads.

Having thus described my invention, I claim and desire to secure by Letters Patent 1. The combination in a cross-weaving loom of the fixed frame, heddle-frames carrying eyed needles for controlling the cross- Weaving warp-threads, cam-controlled sheddinglevers, and a cam-controlled heddleframe-shifting lever at one end of the loom, transmitting-levers at the other end of the loom and levers at the top of the loom whereby motion is transmitted from the sheddinglevers to the heddle-frames and from the heddle-frame-shifting lever at one end of the loom to the transmitting-levers at the opposite end of the loom, substantially as specitied.

2. The combination, in a cross-weaving loom, 01' the mainframe, heddle-frames carrying eyed needles for controlling the crossweaving warp-threznls, a cam-controlled. heddle-lrame-shitting lever at one end of the loom, a three-armed lever at the opposite end of the loom engaging one heddle-lrame on one side oi its fulcrum and the other heddleframe on the other side of its fulcrum, and

means for transmitting movement from said he ldle-iramo-shil'ting lever to said threearmed lever, substantially specil'ied.

3. The combination in a cross-weaving loom of heddle-lrames carrying eyed needles for controlling the cross weaving warpthreads, bars upon which said heddle-iramcs are mounted, and means for adjusting said bars laterally in respect to the heddle-frame so as to vary the relation of the needles to each other, substantially as specified.

1. The combination, in a cross-weaving loom, of heddlc-frames having eyed needles for controlling the cross weaving warpthreads, and bars llanliing said needles on each side, substantially as specified.

5. The combination, in a cross-weaving loom, o'l heddle-irames having longitudinal bars carrying eyed .needles for controlling the cross-weaving warp-threzuls, and other longitudinal bars upon which are mounted bars llanliing the needles on each side, substantially as specified.

6. The combination of a hcnldle-lrame having longitudinal bars thereon with transverse bolts therein, and eyed needles for controlling the crossweaving warp-threads, each of said needles having a hooked end engaging; a belt of a longitudinal bar, and also having a bent end entering an opening in said bar, substantially as specified.

" The combination, in a cross-weaving 1. loom, of l1e ldle-ira1nes carrying eyed needles for controlling the cross weaving warpthreads, means for simultaneously raising one of said heddles and lowering the other, and means for ell'ecting lateral movement of the heddle-lrames when the heddle-eyes are adjacent to each other at the center of the shed, substantially as specified.

8. The combination, in a cross-weaving loom, of heddle-l'rames having longitudinal bars, eyed needles for controlling the cross weaving warp-threads, and means for laterally adjusting the needles of each heddleirame from and toward each other on their supporting-bars, substantially as specified.

9. The combination, in a cross-weaving loom, ol' heddle-lrames controlling the crossweaving warp-threads, and pattern mechanism l'or operating said heddle-lranies, said pattern mechanism having members for imparting to each heddle-lrame a hall-shed-andreturn movement with intervening side movement for each full beat of the lay, sub stantially as speci'lied.

10. The combination, in a cr0ssweaVing loom, of l1e ldle-framcs for controlling the LOO cross-Weaving Warp threads, and pattern mechanism havmg, 1n alternatlon, members for imparting to each heddle-frame during each full beat of the lay, a half-shecband-re turn movement with intervening cross movement, or a full-shed movement Without re turn or cross movement substantially as specified.

In testimony whereof I have signed my name to thls specification 1n the presence of IO 1 two subscribing witnesses.

ANDREWV YVEIMAR.

Witnesses WVALTER CHISM, Jos. H. KLEIN. 

